御食い初め[okuizome] weaning ceremony
為初め[shisome] outset
為初める[shisomeru] to begin to do
仮初[karisome] temporary
業界初[gyoukaihatsu] the industry's first ...

月初め[tsukihajime] beginning of month
最初[saisho] beginning
初めに[hajimeni] to begin with (used as an introduction)
初めは[hajimeha] at first
手初めに[tehajimeni] at first

鴬色[uguisuiro] greenish brown
鴬嬢[uguisujou] female announcer

鴬張り[uguisubari] nightingale (flooring)
初鴬[hatsuuguisu] first Japanese bush warbler to chirp this year (i.e. spring)