1 in definition

la'ai _{LOhU

…LEhU} experimental cmavo

otherwise lojbanic name, ending in a vowel; multiple names delimited by pauses.

Can be used to quote name(s) ending in consonants as well. See also lai'e of LAhE, la'au of LU and la'o of ZOI for naming cmavo.

On grammatical class:

lo'u: start questionable/out-of-context quote; text should be Lojban words, but needn't be grammatical.
la'ai (exp!): otherwise lojbanic name, ending in a vowel; multiple names delimited by pauses.

In definition:

cmavrlo'u: x₁ is the selma'o "LOhU".

In notes:

la'au: start grammatical name quotation; the quoted text is an identifier and must be grammatical on its own.
xa zei sumtika: x₁ is a part of Lojban text representing rule 'sumti-6' according to the first edition of the book 'The Complete Lojban Language'.